بررسی بافت میکرایت و رابطه آن با گسترش ریزتخلخل‌ها و تغییرات کیفیت مخزنی، سازند داریان، بخش مرکزی خلیج فارس

نوع مقاله : علمی -پژوهشی

نویسنده

دانشگاه تهران، دانشکده زمین‌شناسی

10.29252/esrj.9.1.118

چکیده

رخساره‌ها، محیط رسوبی، فرآیندهای دیاژنزی و ریزتخلخل­های موجود در سازند داریان در سه چاه از یک میدان در بخش مرکزی خلیج­فارس در این مطالعه مورد بررسی قرار گرفته است. نتایج نشان داد که سازند داریان از شش ریزرخساره کربناته تشکیل و در یک رمپ کربناته نهشته شده است. بررسی فرآیندهای دیاژنزی نشان داد که رسوبات پس از نهشته‌شدن در سه محیط دیاژنزی دریایی، جوی و تدفینی قرار گرفته‌اند. دیاژنز دریایی تأثیر زیادی بر روی این سازند نداشته است اما انحلال جوی سبب گردیده تا برخی دانه‌ها حل شده و دانه‌های میکرایت گرد شوند. در محیط دفنی فضاهای خالی انحلالی ایجاد شده با سیمان کلسیتی پر شده است و در نتیجه تخلخل کاهش یافته است. در مطالعات پتروگرافی تخلخل زیادی در نمونه‌ها مشاهده نمی‌گردد اما آزمایشات معمول مغزه، تخلخل قابل ملاحظه‌ای را در این نمونه‌ها نشان می‌دهد و این امر تأییدکننده حضور ریزتخلخل­ها به­عنوان اصلی‌ترین نوع تخلخل در نمونه‌ها است. بررسی نمونه‌های میکرایتی با استفاده از میکروسکوپ الکترونی نشان داد که دانه‌های میکرایت، گردشده با تماس نقطه‌ای هستند. گردشدگی دانه‌ها سبب شده تا تخلخل زیادی در آنان ایجاد گردد. نوع تماس نقطه‌ای نیز سبب شده است تا این تخلخل در طی دیاژنز عمیق حفظ گردد. بررسی ارتباط بین ریزتخلخل­ها با رخساره‌ها و محیط رسوبی نشان می‌دهد این نوع از تخلخل در همه رخساره‌های گل‌پشتیبان دیده می‌شود و با عمیق‌تر شدن محیط رسوبی و افزایش میزان میکرایت در نمونه‌ها، ریزتخلخل موجود در آنان نیز افزایش می‌یابد.

کلیدواژه‌ها

عنوان مقاله [English]

Consideration of Micrite Texture and its Relationship with Microporosity Development and Reservoir Quality, Dariyan Formation, Central Persian Gulf

چکیده [English]

The focus of this study is on the facies, sedimentary environments, diagenetic processes and microporosity of Dariyan Formation in three wells of one field in central Persian Gulf. The results showed that the Dariyan Formation is made from six microfacies and has been deposited in six sub-environments. Regarding the sub-environments of the microfacies, lack of widespread carbonate shoals, gradational change of facies into one another, lack of talus sediments and slumping structures, these facies have been deposited in a carbonate ramp environment. Consideration of the diagenetic processes in this formation showed that sediments experienced marine, meteoric and burial diagenesis. Regarding the mud-dominated nature of the most samples, marine diagenesis has no considerable effect on them while meteoric effect is significant. The meteoric diagenesis caused dissolution of grains and increased roundness of micrites. The resulted empty voids have been cemented with calcite in burial diagenetic environment. No considerable porosity is visible in petrographical studies while routine core porosity measurements show high empty spaces. This proves the role of microporosity as the main pore type in these samples. Study of mud-dominated samples with scanning electron microscope showed that the micrites are rounded with punctic contacts and this caused creation and remaining of high porosity amount in the samples. Consideration the relationship between facies, sedimentary environments and microporosity in this formation shows that this type of porosity exists in all mud-dominated facies and increase with increasing depth of deposition and resulted increasing micrite content.

کلیدواژه‌ها [English]

  • Dariyan Formation
  • Micrite texture
  • Microporosity
  • Persian Gulf
  • Reservoir quality

مراجع

  1. -Afghah, M. and Shaabanpour Haghighi, A., 2014. Aptian biostratigraphy in South Zagros Basin, southwest Iran: Geoscience Frontiers, v. 5, p. 277-288.
  2. -Al-Ghamdi, N. and Pope, M., 2014. Integrated high-resolution chemostratigraphy and facies based stratigraphic architecture of the Lower Cretaceous (Aptian), Shu’aiba Formation, Saudi Arabia: American Association of Petroleum Geologists Bulletin, v. 98, p. 1521-1549.
  3. -Alsharhan, A.S. and Nairn, A.E.M., 1993. Carbonate platform models of Arabian Cretaceous reservoirs. In Simo, J.A.T., Scott, R.W. and Masse, J. P., (Eds.), Cretaceous carbonate platforms: American Association of Petroleum Geologists, Memoir 56, p. 173-184.
  4. -Andrews, J.E., Christidis, S. and Dennis, P.F., 1997. Assessing mineralogical and geochemical heterogeneity in the sub 63 micron size fraction of Holocene lime muds: Journal of Sedimentary Research, v. 67, p. 531-535.
  5. -Budd, D.A., 1989. Micro-rhombic calcite and microporosity in limestones: a geochemical study of the Lower Cretaceous Thamama Group, U.A.E: Sedimentary Geology, v. 63, p. 293-311.
  6. -Burchette, T.P. and Wright, V.P., 1992. Carbonate ramp depositional systems: Sedimentary Geology, v. 79, p. 3-57.
  7. -Choquette, P.W. and Pray, L.C., 1970. Geologic nomenclature and classification of porosity in sedimentary carbonates: American Association Petroleum Geologists Bulletin, v. 54, p. 207-250.
  8. -Dickson, J. A. D., 1965. A modified technique for carbonates in thin section: Nature, v. 205, p. 587.
  9. -Droste, H.J., 2010. Sequence-stratigraphic framework of the Aptian Shu’aiba Formation in the Sultanate of Oman, In: van Buchem, F.S.P., Al-Husseini, M.I., Maurer, F. and Droste, H.J. (Eds.), Barremian - Aptian stratigraphy and hydrocarbon habitat of the eastern Arabian Plate: GeoArabia Special Publication 4, Gulf PetroLink, Bahrain, v. 1, p. 229-283.
  10. -Dunham, R.J., 1962. Classification of carbonate rocks according to depositional texture, In: Ham, W. E. (ed.), Classification of carbonate rocks: American Association of Petroleum Geologists Memoir, p. 108-121.
  11. -Embry, A.F. and Klovan, J.E., 1971. A Late Devonian reef tract on Northeastern Banks Island, NWT: Canadian Petroleum Geology Bulletin, v. 19, p. 730-781.
  12. -Folk, R.L., 1974. The natural history of crystalline calcium carbonate: effects of magnesium content and salinity: Journal of Sedimentary Petrology, v. 44, p. 40-53.
  13. -Gischler, E., Dietrich, S., Harris, D., Webster, J.M. and Ginsburg, R.N., 2013. A comparative study of modern carbonate mud in reefs and carbonate platforms: Mostly biogenic, some precipitated: Sedimentary Geology, v. 292, p. 36-55.
  14. -Gischler, E. and Zingeler, D., 2002. The origin of carbonatemud in isolated carbonate platforms of Belize, Central America: International Journal of Earth Sciences, v. 91, p. 1054-1070.
  15. -Husinec, A., 2001. Palorbitolina lenticularis from the northern Adriatic region: paleogeographical and evolutionary implications: Journal of Foraminiferal Research, v. 31, p. 287-293.
  16. -Husinec, A., Velic, I., Fucek, L., Vlahovic, I., Maticec, D., Ostirc, N. and Korbar, T., 2000. Mid Cretaceous Orbitolinid (foraminiferida) record from the Islands of Cres and Losinj (Croatia) and its regional stratigraphic correlation: Cretaceous Research, v. 21, p. 155-171.
  17. -Lambert, L., Durlet, C., Loreau, J. and Marnier, G., 2006. Burial dissolution of micrite in Middle East carbonate reservoirs (Jurassic–Cretaceous): keys for recognition and timing: Marine and Petroleum Geology, v. 23, p. 79-92.
  18. -Lonoy, A., 2006. Making sense of carbonate pore systems: American Association Petroleum Geologists Bulletin, v. 90, p. 1381-1405.
  19. -Loreau, J.P., 1972. Petrographie de calcaires fins au microscope electronique à balayage: introduction à une classification des “micrites”: Comptes Rendus de l'Academie des Sciences, v. 274, p. 810-813.
  20. -Lowenstam, H.A. and Epstein, S., 1957. On the origin of sedimentary aragonite needles of the Great Bahama Bank: Journal of Geology, v. 65, p. 364-375.
  21. -Lucia, F.J., 1995. Rock-fabric/petrophysical classification of carbonate pore space for reservoir characterization: American Association Petroleum Geologists Bulletin, v. 79, p. 1275-1300.
  22. -Macintyre, I.G. and Aronson, R.B., 2006. Lithified and unlithified Mg-calcite precipitates in tropical reef environments: Journal of Sedimentary Research, v. 76, p. 81-90.
  23. -Mansouri-Daneshvar, P., Moussavi-Harami, R., Mahboubi, A., Gharaie, M.H.M. and Feizie, A., 2015. Sequence stratigraphy of the petroliferous Dariyan Formation (Aptian) in Qeshm Island and offshore (southern Iran): Petroleum Science, v. 12, p. 232-251.
  24. -Matsumaru, K. and Furusawa, A., 2005. The present condition and subject of the Cretaceous Orbitolinid foraminiferal studies of Japan: Journal of Saitama University, v. 54, p. 15-22.
  25. -Maurer, F., Al-Mehsin, K., Pierson, B.J., Eberli, G.P., Warrlich, G., Drysdale, D. and Droste, H.J., 2010. Facies characteristics and architecture of Upper Aptian Shu’aiba clinoforms in Abu Dhabi. In: van Buchem, F.S.P., Al-Husseini, M.I., Maurer, F. and Droste, H.J. (Eds.), Barremian - Aptian stratigraphy and hydrocarbon habitat of the eastern Arabian Plate: GeoArabia Special Publication 4, Gulf PetroLink, Bahrain, v. 2, p. 445-468.
  26. -Mazzullo, S.J., 2004. Overview of porosity evolution in carbonate reservoirs: Kansas Geological Survey Bulletin, v. 79, p. 22-28.
  27. -Mehrabi, H., Mansouri, M., Rahimpour-Bonab, H., Tavakoli, V. and Hassanzadeh, M., 2016. Chemical compaction features as potential barriers in the Permian-Triassic reservoirs of Southern Iran: Journal of Petroleum Science and Engineering, v. 145, p. 95-113.
  28. -Mehrabi, H., Rhimpour-Bonab, H., Hajikazemi, E. and Esrafili-Dizaji, B., 2015. Geological reservoir characterization of the Lower Cretaceous Dariyan Formation (Shu'aiba equivalent) in the Persian Gulf, southern Iran: Marine and Petroleum Geology, v. 68, p. 132-157.
  29. -Moosavizadeh, M.A., Mahboubi, A., Moussavi-Harami, R. and Kavoosi, M.A., 2014. Early Aptian oceanic anoxic event (OAE 1a) in Northeastern Arabian Plate setting: an example from Dariyan Formation in Zagros fold–trust belt, SE Iran: Arabian Journal of Geosciences, v. 7, p. 4745-4756.
  30. -Morse, J.W., Gledhill, D.K. and Millero, F.J., 2003. CaCO3 precipitation kinetics in waters from the Great Bahama Bank: implications for the relationship between bank hydrochemistry and whitings: Geochimica et Cosmochimica Acta, v. 67, p. 2819-2826.
  31. -Moshier, S.O., 1989a. Microporosity in micritic limestones: a review: Sedimentary Geology, v. 63, p. 191-213.
  32. -Moshier, S.O., 1989b. Development of microporosity in a micritic limestone reservoir, Lower Cretaceous, Middle East: Sedimentary Geology, v. 63, p. 217-240.
  33. -Naderi-Khujin, M., Seyrafian, A., Vaziri-Moghaddam, H. and Tavakoli, V., 2016a. A record of global change: OAE 1a in Dariyan shallow-water platform carbonates, southern Tethys, Persian Gulf, Iran: Facies, v. 62, 25 p.
  34. -Naderi-Khujin, M., Seyrafian, A., Vaziri-Moghaddam, H. and Tavakoli, V., 2016b. Characterization of the Late Aptian top-Dariyan disconformity surface offshore SW Iran: a multi-proxy approach: Journal of petroleum geology, v. 39, p. 269-286.
  35. -Neumann, A.C. and Land, L.S., 1975. Lime mud deposition and calcareous algae in the Bight of Abaco: a budget: Journal of Sedimentary Petrology, v. 45, p. 763-786.
  36. -Perry, C.T., Salter, M.A., Harborne, A.R., Crowley, S.F., Jelks, H.L. and Wilson, R.W., 2011. Fish as major carbonate mud producers and missing components of the tropical carbonate factory: Proceedings of the National Academy of Science, v. 108, p. 3865-3869.
  37. -Pittman, E.D., 1971. Microporosity in carbonate rocks: American Association Petroleum Geologists Bulletin, v. 55, p. 1873-1881.
  38. -Salter, M.A., Perry, C.T. and Wilson, R.W., 2012. Production of mud-grade carbonates by marine fish: crystalline products and their sedimentary significance: Sedimentology, v. 59, p. 2172-2198.
  39. -Schroeder, R., van Buchem, F.S.P., Cherchi, A., Baghbani, D., Vincent, B., Immenhauser, A. and Granier, B., 2010. Revised orbitolinid biostratigraphic zonation for the Barremian-Aptian of the eastern Arabian Plate and implications for regional stratigraphic correlations: GeoArabia Special Publication, v. 4, 49-96.
  40. -Shaabanpour Haghighi, A. and Sahraeyan, M., 2014. Facies analysis and diagenetic features of the Aptian Dariyan Formation in Zagros Fold–Thrust Belt, SW Iran: Journal of African Earth Sciences, v. 100, p. 598-613.
  41. -Tucker, M.E., 2001. Sedimentary Petrology: An Introduction to the Origin of Sedimentary Rocks, 3rd Edition: Wiley-Blackwell, 272 p.
  42. -van Buchem, F.S.P., Al-Husseini, M.I., Maurer, F., Droste, H.J. and Yose, L.A., 2010. Sequence-stratigraphic synthesis of the Barremian- Aptian of the eastern Arabian Plate and implications for the petroleum habitat. In: van Buchem, F.S.P., Al-Husseini, M.I., Maurer, F. and Droste, H.J. (Eds.), Barremian - Aptian stratigraphy and hydrocarbon habitat of the eastern Arabian Plate: GeoArabia Special Publication 4, Gulf PetroLink, Bahrain, v. 1, p. 9-48.
  43. -Vilas, L., Masse, J.P. and Arias, C., 1995. Orbitolina episodes in carbonate platform evolution: the Early Aptian model from SE Spain: Paleogeography, Paleoclimatology, Paleoecology, v. 119, p. 35-45.
  44. -Vincent, B., Van Buchem, F.S.P., Bulot, L.G., Immenhauser, A., Caron, M., Baghbani, D. and Huc, A.Y., 2010. Carbon-isotope stratigraphy, biostratigraphy and organic matter distribution in the Aptian-Lower Albian successions of southwest Iran (Dariyan and Kazhdumi formations), In: van Buchem, F.S.P., Al-Husseini, M.I., Maurer, F., Droste, H.J. (Eds.), Barremian-Aptian Stratigraphy and Hydrocarbon Habitat of the Eastern Arabian Plate, GeoArabia Special Publication 4, Gulf PetroLink, Bahrain, v. 1, p. 139-197.
  45. -Volery, C., Davaud, E., Durlet, C., Clavel, B., Charollais, J. and Caline, B., 2010. Microporous and tight limestones in the Urgonian Formation (late Hauterivian to early Aptian) of the French Jura Mountains: Focus on the factors controlling the formation of microporous facies: Sedimentary Geology, v. 230, p. 21-34.
  46. -Volery, C., Davaud, E., Foubert, A. and Caline, B., 2010. Lacustrine microporous micrites of the Madrid Basin (Late Miocene, Spain) as analogues for shallow-marine carbonates of the Mishrif reservoir Formation (Cenomanian–early Turonian, Middle East): Facies, v. 56, 385-397.

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